CVE-2026-49868

Published: Ott 16, 2026 Last Modified: Ott 21, 2026

ExploitDB:

Other exploit source:

Google Dorks:

CRITICAL 9,8

Source: [email protected]

Attack Vector: network

Attack Complexity: low

Privileges Required: none

User Interaction: none

Scope: unchanged

Confidentiality: high

Integrity: high

Availability: high

Description

AI Translation Available

RIOT is an open-source microcontroller operating system designed for Internet of Things devices and other embedded systems. Prior to 2026.07, _parse_reply() in sys/net/application_layer/dhcpv6/client.c omits minimum-length validation before passing IA_PD and IA_NA option bodies to sub-option parsers. A malicious or compromised DHCPv6 server can send a REPLY with an option length smaller than the required structure while MODULE_DHCPV6_CLIENT_IA_PD is enabled, causing _parse_ia_pd_option to read past the option body, size_t underflow, and unbounded out-of-bounds heap reads that can crash the device and may expose or corrupt memory. This issue is fixed in version 2026.07.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score

0,0037

Percentile

0,3th

Updated

EPSS Score Trend (Last 4 Days)

125

Out-of-bounds Read

Draft

Abstraction: Base Structure: Simple

Common Consequences

Security Scopes Affected:

Confidentiality Availability Other

Potential Impacts:

Read Memory Bypass Protection Mechanism Dos: Crash, Exit, Or Restart Varies By Context

Applicable Platforms

Languages: Memory-Unsafe, C, C++

Technologies: ICS/OT

View CWE Details

191

Integer Underflow (Wrap or Wraparound)

Draft

Abstraction: Base Structure: Simple

Common Consequences

Security Scopes Affected:

Availability Integrity Confidentiality Access Control

Potential Impacts:

Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Instability Modify Memory Execute Unauthorized Code Or Commands Bypass Protection Mechanism